Door operating and locking mechanism.



. L. O NORTON. DOOR QPBBATING AND LOCKING MECHANISM.

APPLIGATIBE FILED MAY 23. 1914.

Patented Nov. 17, 1914.

l ifilfig f o V Fig.1.

WiTnesses. Invenfor.

Lewis C. NorTcn I Mi 5;: i magi W Aik inarrnn srairhsrarnnr oinnon LENIS C. NORTON. OI CHICAGO. ILLINOIS. ASSIGNOR TO NORTON DOOR CHECK COM- PANY, OF CHICAGO, ILLINOIS, A CORPORATION OF WEST VIRGINIA.

DOOR OPERATING AND LOCKING MECHANISM.

T ill/I whom it may com/cm:

lie it known that I. LEWIS C. Xon'rox. a citizen of the lnitcd States. residing at 'hicago. county of Cook. State of lllinois. have invented an improvement in Door ()pcrating and Locking Mechanism, of which the following description, in connection with the accompanying drawing. is a specification, like characters on the drawing representing like parts.

This invention relates to operating mechanism for sliding doors and particularly to door-operating devices of that nature which include a toggle lever arrangement comprising two members pivotally connected together and pivoted to the door and a fixed abutment. respectively.

The objects of the invention are to pr0- vide a mechanism of this nature with novel means for locking the toggle lever device when the door is closed 'and il or unlocking and breaking said toggle lever device when the door is to be opened.

In accordance with my invention 1 provide the two toggle lever members with portions that overlap each other when the door is closed and also provide means having an interlocking engagement with the overlapping portions to lock them against relative move .ient. In the preferred embodiment of my invention this means is associated with the handle by which the door is opened and the parts are so arranged that when the operator moves the handle the first movement of the handle will unlock the toggle members while further movement of the handle will breakthe toggle and open the door.

In order to give a proper umlerstantling my invention l have illustrated in the avvings a selected en'ibodiment thereof which will now be described after which the novel features will be pointed out in the appended claims.

Figure l of the drawings is a view showing my invention as applied to a two-section door; Fig. is a top plan view of a portion of the toggle lever mechanism; Fig. 3 is a perspective view of the overlapping portion of the toggle levers and themeans for locking them intlieii' overlapping relation. While I have herein illustrated my invention as applied to a sectional door I desire to state at the outset that the invention is not limited to a sectional door, but can be Specification of Letters Patent.

Application filed May 23, 1914.

Patented Nov. 17. 191,

Serial No. 840.637.

applied to a toggle-lever door-operating mechanism adapted to operate a single door only. My imention can be applied to any sliding door. but has spccial atlniulages when applied tothe sliding doors of elevators and elevator \vells. I

in the drawings 1 have shown at l and :i tvvo sliding door sections which are adapted to he moved from the full line position Fig. l in which the door is closed to the dotted line position in which the door is open.

The means herein shown 'l'or operating the doors comprises a ti'igglc-lever device made in three sections 3, -l.- and 5, respecti\'t. The section 3 is pivoted at its outer end to the door section 1. as shown at 3. and. at its other end it is pivoted to the section -lat i. The intermediate section -lis pivoted to the rear edge of the door section 1 as shown at S. and at its outer end is pivoted to the sec tion as at J. The section 5 is pivetally connected to a lixed abutment. as at 10. and in the ease of an elevator door this aliilltili' "Ill.- would he the walls of the elevator \xell. The. construction ol this to if rli-devcr arrangement is such that when the doors are *l sed the sections 3. l and 3 all stand in alinement with each other. as shown in tall lines Fig. 1. thus locking the doors closed. \Yhen the. doors are opened the section 3 and the. end of the section to which it is pivoted move dovvnivardlv. bile the opposite end of the section and the section a move upwardly into the dotted line positions Fig. 1. If desired. I may associale with my togglelever device a combined door closer and check shown at H. as is commonly done in elevator door-operating devices, such door closer and cheek being in the form of a dashpot arrangement having a. door-closing spring therein. This device. ill operates antomaticalli to close the. door and to check the closing movement thereof.

My invention aims to provide a novel device which is associated with the togglelever door-closing mechanism by which the toggle-lever is locked when the door is closed, which means also constitute the handle by which the toggle-lever is operated to open the door. The two members 3 and l of the toggle-lever device are arranged to present portions that overlap each other. this being herein provided for by extending the sections 4 beyond the pivot. 7 to provide a portion 12 which overlaps the section 3. I have herein shown the section 4! as made up of two bars between which the ends of the sections 3 and 5 are received. The overlapping portions of the sections 3 and 12 are provided with notches 13 to receive a locking member I l which when in operative position locks the sections 3 and 4 in their alined position and prevents the toggle lever from breaking. This locking memher 14 is herein shown as associated with a handle 15 by which the door can be operated. This handle may conveniently be pivoted to the section 4:, as shown at 16, and it is provided with automatically-operative a which tend normally to throw the loci-ling portion 14 into locking position. Such automatically-operative r means might be a spring or a weight, one being equivalent to the other. WVhere such means is in the form of a weight I propose to provide the handle 15 with an extension 17 which is received between the two parts of the" section 4. e r

The operation of the device will be read- 5 ily understood from the foregoing. When the door is closed the parts are in the full line position Fig. 1 with the locking member 14; occupying the alined notches 13 in the sections 3 and 4, respectively, and when the Q parts .are'in this position not only is the door locked because the sections 3, 4 and 5 are in alinement, but the sections of the toggle lever are locked from-movement relative to each other and, therefore, the toggle lever cannot be broken merely by pressure applied vertically to the SectionsB and 4. In order to open the door the operator grasps the handle 15 and draws downwardly thereon, this movement opera-ting first tofswing so the handle into the dotted line position-Fig.

l and remove'the looking'portion 14 from the notches 13. A stop pin rl8 carried-by the section 4 may bejused if desired/to limit the swinging movement of the) handle 15 relative to the section l. ,When the .handle 15 has been brought into the dotted line position. Fig. 1 and the toggle lever sect-ions are un' locked then further downward'pressure on the handle 15' will break the toggle lever and open the door as will be obvious. The

operation of unlocking the toggle lever and then opening the door involves, therefore;

merely a steady downward and backward pull on the handle 15, the. initial movement of the handle unlocking the toggle lever and the 'i'urther movement breaking the toggle and opening the door. When the opened door is released the door closer and check'll will operate to close the door automatically, and when the door has been closed the weight 17 or other automaticall -'o erated means will automatically cause t e ocking portion 14., to. enter the notches -13 and thus lock the toggle lever in the position shown in Fig; 1.

While I have herein shown the invention as applied to a sectional door, yet it will be obvious that it-could be equally well applied to a single section door in which latter case the pivotal point 8 would be on a fixed abut- 7o ment instead of on a moving door section. The operation of the handle 15 and locking member 14 would not be affected, however, by such change.

While I have illustrated a selected em bodiment of my invention, I do not wish to be limited to the constructional features shown, I

I'claim:

1. In a door-operating, device, the combi nation with a sliding door, of a toggle-lever. door-operating device comprising two mem bers pivotally connected together, one of which is pivotally connected to the door, said members having portions that overla each other when the door is closed, an

means having interlocking engagement with said overlapping portions to lock them fro movement relative to'each other. I

2. In a dOo'noPerat-in'g device, the comhi to nation with a sliding'door, of a toggle-lever door-operating device. comprising two members pivotally connected together, one ofv 4 which is pivotally connected'to thedoor,- said members having portions that overlap" each other when the door is closed, and a handle for opening the door cooperatively connected to one of said members and provided with means having interlocking engagement with said overlapping portions I when the door is closed to lockthe togglelever sections from movement relative each other.

3. Ina door-operating device, the combination with a sliding door, of a togglerlever door-operating device comprising two. members pivotally connected together, one of which is pivotally con'nected to the door,

said members having portions that overlap each other when the door is closed, and a handle pivoted to one of said toggle-lever members and having means to interlock with the overlapping portions of said members to lock them in t door is closed.

i. In a door-operating device, the combination with a slidin door, of a toggle-lever door-operating mec anism comprisingtwo members pivotally connected togetheqone of which members is pivotally connected to the door, said members, having portions which overlap each other, and said overlap-. ping portions being provided with notches which are in alinement when the door is closed, a handle pivotally mounted to one 5 of said members and-provided with a locking portion to enter said notches when in alinement and lock the toggle-lever members from relative movement, movement of the handle operating first to unlock the toggler alined position when the enmesiever meinbers end thentobreek the toggle and open the door.

the door, said members having portions which overlap each other and said overlapping portions being provided with notches which are in eiinement when the door is.

closed, a handle pivotelly mounted to one of said members and provided with a locking portion to enter said notches when in ahnement and lock the toggle-lever members when the from relative movement, movement of the handle operating first to unlock the togglelever members and then to break the toggle and open the door, and autcmetieeiiy-oper etive men-meeting on-said handle to bring the lockin portion into the alined notches cor is closed.

e In testimony wiiereef, I have signed my name to this specification, in the presence of two subscribing Witnesses.

. LEWIS C. NORTON.

Witnesses; I

E. M. Gums, E. E. Exam n 

